cost an arm and a leg/a small fortune idiom (UK also cost a bomb/the earth/a packet)
极其昂贵;花一大笔钱
to be extremely expensive
I'd love to buy a Porsche, but they cost an arm and a leg. 我倒是想买辆保时捷，可实在太贵了。
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。